Radial air diffuser



FIG. 1 is a perspective view the radial air diffuser;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a side view thereof, the opposite side being the mirror image. 

CLAIM The ornamental design for a radial air diffuser, as shown and described. 